tuttle



L. T. TUTTLE.

COMMUTATUR.

APPLICATION FILED JUNE 9. Ism.

1,347,065. Patented JuIy 20, 1920.

4u/mv I farms A T T RNE Y.

` State of PATENT o FFICE.

LAURENT. TU'rrLE, oFsANtraANCrsoo, cALrronNIA.

COMMUTATOR.

l Speeicationpi Letters Patent. i liatentd Jly 20, 1920.

f application-mea :une s, 1919. semi No. 302,960.-

To all'wko'm, it may concern:

Bc it known that I,2LAU11EN1T. Torrini, a citizen of the United States, and a resident of the cit and county of San F rancisco` aliforna, have made a new-and useful inventionto wit, an Im rovement in Commutators; and I dovheregy declare the following to Vbe fa full, clear,v concise, and exact description of the same.

This invention'relates to 'a new and use;l ful im rovement in timing? mechanism? common y known as commutators'.

f i' This device is particularly adapted to vbe used with Ford cars, butit is obvious jthat the same vmay be used in .otl`1er-'places''to accomplish similar results The principal object of the invention'f is to 'produce a. commutator which may be cheaply manufactured and which may be readily assembledfand which will afford superior ignition and longer wearingvproperties.

'Another object of this invention is to 'provide a commutator which may be attached. to the usual Ford car without any material change. l' '1* Another object is to provide means whereby the contacts may 'be readily changed when Worn. .v

Further objects and advantages will be seen as the description proceeds. l

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying drawings:

Figure 1 is a plan view in elevation of the improved commutator.

iig. 2 is a cross section on the line 2-2 of Fia. 1.

Fig. 3 is a side view in elevation of a ring member.

Fig. 4 is a plan view in elevation of the same.

Fig. 5 is a plan view in elevation of the moving contact carrying member.

Fig. 6 is a cross section of the Same taken on the line 6--6 of Fig. 5,

Fig. 7 is a detail view of one of the spring members. i

Fig. Sis a detail View of one of the spring contacts):l f i f -Lilre `numerals correspond to like parts inthe several views. f

The `numeral 6 represents the end of the usual camshaft of Aa Ford `car having a nut 7 screwed upon its outer end. The numeral 8 refers to a bushing adapted to sur# round 'the said shaft to which is attached preferably a` iiberfmeniber. This fiber member 9 is providedat-11iwithiafmetal contact piece, 'preferably 'of ilphosphorus bronze," `This contact piece isheld -in en` gagement with'the A screwif12fis also' providedwhich assists in-retainingthe metal member' 11 in position and passe's'through the-liber member 9 and is threaded through Athefbushing 8. 'Ihis'screwE 12 `=also forms an electrical connection between'the' bushing 8 and the contact' 11,I 'the'bushin'g 8 beingin contact with the cam shaft of 'the can-'the frame of which is usuallyelectricall *grounded Surround- Aing theend of thes 'aft is a cup member' 13 carrying hindi 'posts 14. *These binding posts 14 are; 'rovidedlwith the usual knurled nuts15,an passthrough the cup 13. At 16 and -17"iber"pieces are introduced soV as to further assist in insulatingthe `binding posts from thecup.

`The *innerfends of 'the-binding" PSt's '14 contact with metallicP plates 18 which plates are curved at their ends, as at 19, to receive the ends of springs 21. These springs are coiled as shown in Fig. 7 and have a central loop 22 adapted to receive and engage contact members 23. These contact members are circular in shape and are provided with a groove 24 to receive the sprmg wire forming the construction the metal members 23 may be rotated with relation to the spring or may be laterally removed and replaced.

In assembling my device upon a Ford car, the usual spring contact roller is removed and the ibermember 9 with its bushing 8 is placed in its stead upon the end of the shaft 6, after which anail or similar object is inserted through the o enin 26 (see Figs. 5 and 6) the purpose o whic is to provide a means for placin this contact carrying member upon the s aft, so that the motor will be properly timed It will be understood that this commufiberY member 59 through dove-tail connections as Shown in Fig. 5.`

'loop 22. By means of this.

,tator will replace other devices which have said plates and a contact member carried by me worn Vor inoperative and 1t'1s of. each o f said loops i .Y great importance to srovide a structure 3. In a contact' device, the combination of 45 -which may be easily an quickly adusted to ft-movable contact member, bindin posts the same' position relativetothe englne parts suitably insulated and .in line wit said and preserve "the vpre-arranged `firingjcycle 'movablecontact, plates carried by the end in order to obviate' the necessity of timing of said binding posts, coiled spring members .each provided with a loop substantially in 45o After the nail .or other object'` has been the center of said coils and extending tanforcedginto the holein the shaft V(i, a ring' gentially from said coils and each having member??? isl placed over the end" of the `their free ends securedto said plates, a'nd a bushing' 8' that the cut away'poiticn 29 contact member carried by each -of said .willpass around 'the nail .or'alining tool, 'loops'saidcontacts being circular'in form. 55

after which tbe'znt 7 is replaced upon the lLin a c'bntact device, the combination of .shat'fand tightened. The nail oralining a Amovable contact, member, bindinggr posts tool may'then be withdrawn an the cup suitably insulated and in iine withpsaid' movmember placed in proper positioniso that able contact, plates-carried by the ends of the metal'contacts 23V will rest u 'one the pesaid binding posts, coiled spring members 6o riphery-of the member 9, :and wlien rotated each 'provided 'With'f l00P `SUbS &Ilt&11y in tire contact 11 will be brought into successive the center of the coils thereof and extending 'contact with. the members 23. tangeiitially from said coil'and each havi 'g rotat contact,- a cu shaped member mem. GPS- -Having;thus described my inventionwhat lts f ree 4endssecured toone of said pla I claim' as V new and desire to secure by Let- Icontact members carried by said loops, saiV V15:5 ters Patentof the United States is as folcontacts being circular in form and eaclr lows;`' i 4 provided with anannular groove adapted to y 1,111 a commutator, the combination ofa enga a loop on 'one of' said coiled spring adapte 'to inclose `sai 'rotating Contact 5. In a f` mmutator, the combination of a"70 sprinfs and said rotating contact. members consistlngof a right and left coi springs mounted- Within. said cup shape rotatin contact, `a cupi 'shaped member member, and coiled ina plane tangential to adapte toinclose said rotatinor contact, c'oii vthatpf said rotating member, and meas'for 'springl members mounted Wit in said Vcup causingl electricaljfconnection betweenlsaid. s sped' member, each of said coil sprin' 75 n a contact'device, thco'mbination of and means on each of "said Amembers -fox2 ..5 a movable' cOntacVmeniber, binding posts vcarrying'a contact.

suitabl insulated and in line with said Q In testirnon whereof,i1 have hereunto set i -movab econtact, plates'in contact with the my hand at n Francisco, California, this ends ofsaid bindi 0' posts, coiled 'spring 3rd day of June, 1919.

members provided with loops substantially y .in the'center of said coils and extending LAUREN T' TUTTI-LE tangentially from coils, said spring In presence ofmembers having their free ends securedto PHILIP R. Fnssmvr. 

